<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="UTF-8" />
		<meta http-equiv="X-UA-Compatible" content="IE=edge" />
		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
		<title>Document</title>
		<style>
			.container {
				width: 500px;
				background-color: orange;
				display: flex;
				justify-content: space-between;
				flex-wrap: wrap;
			}

			.item {
				width: 110px;
				height: 150px;
			}

			.container span {
				width: 110px;
				/* height: 20px;
				background-color: red; */
			}
		</style>
	</head>
	<body>
		<div class="container">
			<div class="item item1">1</div>
			<div class="item item2">2</div>
			<div class="item item3">3</div>
			<div class="item item1">1</div>
			<div class="item item2">2</div>
			<div class="item item3">3</div>
			<div class="item item1">1</div>
			<div class="item item2">2</div>
			<div class="item item3">3</div>
			<!-- 列数列数-2 -->
			<span></span>
			<span></span>
		</div>

		<script src="./js/itemRandomColor.js"></script>
	</body>
</html>
